Climate averages 1991–2020
Sơn Tây weather
in January.
A mild, fairly dry month: the coolest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in Sơn Tây: daytime highs average 19.4°C and nights cool to about 14.0°C. By daytime temperature it is the coolest month of the year.
Expect about 37 mm of rain on roughly 8 days, which makes January a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 00 min on an average January day.
The nearest other city in this atlas is Ba Vì (14 km away). In January its highs average 17.3°C, 2.1°C cooler than Sơn Tây, with 37 mm of rain.
Among the 136 cities listed in Vietnam, Sơn Tây ranks joint 113th of 136 for the warmest January highs and joint 84th of 136 for the driest January (rainfall, lowest first). The mean January high of those 136 cities is 24.8°C; Sơn Tây is 5.4°C cooler than that mean.
From January to February, average highs rise by 2.2°C to 21.6°C, and monthly rainfall falls from 37 mm to 26 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sơn Tây climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 19.4°C14.0°C | 14.0°C | 37 | 8.3 | 11.011 h |
| February | 21.6°C15.6°C | 15.6°C | 26 | 8.0 | 11.411 h |
| March | 24.9°C18.5°C | 18.5°C | 48 | 10.4 | 12.012 h |
| April | 28.9°C21.8°C | 21.8°C | 81 | 10.7 | 12.613 h |
| May | 31.1°C24.3°C | 24.3°C | 201 | 17.4 | 13.113 h |
| June | 32.3°C25.9°C | 25.9°C | 215 | 18.2 | 13.413 h |
| July | 31.9°C25.9°C | 25.9°C | 251 | 20.5 | 13.313 h |
| August | 31.2°C25.4°C | 25.4°C | 311 | 22.0 | 12.913 h |
| September | 30.0°C24.2°C | 24.2°C | 201 | 17.8 | 12.312 h |
| October | 27.8°C21.9°C | 21.9°C | 100 | 10.5 | 11.712 h |
| November | 24.6°C18.5°C | 18.5°C | 48 | 6.7 | 11.111 h |
| December | 20.6°C14.7°C | 14.7°C | 29 | 6.5 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Ba Vì in JanuaryVietnam · 14 kmHigh 17.3°C · Low 12.0°C · 37 mm rain
- Vĩnh Yên in JanuaryVietnam · 21 kmHigh 19.2°C · Low 13.8°C · 37 mm rain
- Việt Trì in JanuaryVietnam · 23 kmHigh 19.0°C · Low 13.8°C · 37 mm rain
- Phúc Yên in JanuaryVietnam · 23 kmHigh 19.2°C · Low 13.5°C · 43 mm rain
- Bắc Từ Liêm in JanuaryVietnam · 26 kmHigh 19.4°C · Low 13.6°C · 40 mm rain
- Tây Hồ in JanuaryVietnam · 32 kmHigh 19.4°C · Low 13.5°C · 40 mm rain
- Hanoi in JanuaryVietnam · 37 kmHigh 19.6°C · Low 13.6°C · 40 mm rain
- Sóc Sơn in JanuaryVietnam · 38 kmHigh 19.3°C · Low 13.4°C · 43 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sơn Tây) is explained once on the Sơn Tây year overview and on the Sources, method and limits page.
Việt Trì and Vĩnh Yên lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.